Oxygen permeability of collagen shields.
The oxygen permeability (Dk) of ten 24-hr collagen shields was measured directly by polarographic methodology at approximately 2 hr of hydration. Edge and boundary effects were included in the calculations. Dk was found to be approximately 26 x 10(-11) cm ml O2/sec ml mmHg at 35 degrees C. Mean water content of the shields was 65.7% (SD = 1.0%) as measured by a hand refractometer. Therefore, the projected oxygen transmissibility of collagen shields is expected to be compatible with normal corneal metabolism.
Weissman
B A
BA
Jules Stein Eye Institute, Department of Ophthalmology, University of California, Los Angeles School of Medicine 90024-1771.
Brennan
N A
NA
Lee
D A
DA
Fatt
I
I
D001458:Bandages; D001684:Biological Dressings; D010100:Oxygen / Q000378:metabolism*; D010539:Permeability; D011048:Polarography; D014867:Water / Q000378:metabolism
D014867:Water; D010100:Oxygen